I've tried 2 different styles of 5000 watt electric hanging heaters. I would not recommend them because they take much too long to heat the shop up, and spin the electric meter much too fast. I personally think that a heat source needs a flame to be very effective.
How big is your garage? A 1000 square foot garage needs about 40,000 BTU or 12,000 watts to heat it. Of course there is a lot of things that can add or subtract to this number when calculating like location, insulation, ceiling height, windows and doors etc. Figuring about 10 watts per square foot, your 5000 watt heater sould be just about right for a typical 2-car garage.
Mike B
